Filter.



No. 782,200. PATENTED FEB. 7, 1905. K. KIEFER.

FILTER.

APPLICATION FILED MAY 4. 190s.

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Patented February '7, 1905.

FF ICE.

KARL KIEFER, OF CINCINNATI, OHIO.

FILTER.

SPECIFICATION forming part of Letters Patent No. 782,200, dated February'7, 1905.

Application filed May 4,1903. Serial NoA 155,674.

'/'o rif/ UJI/mn, it m/ty/ con/cern:

Be it known that I, KARL KIEFER, a citizen of' the United States, and aresident of' Oincinnati, in the county of' Hamilton and State ofl Ohio,have invented certain new and usef'ul Improvements in Filtering'Apparatus for the Separation of' Solids from Liquids, of' which thefollowing is a specification.

My invention relates to filters comprising a series of' superimposedfilter elements; and its novelty consists in the means of arranging theelements, assembling' them, and secui'ing' them and their connections inplace.

In my application 'for Letters Patent of' the United States filed by meApril Q9, 1901, Serial No. 57,970, Idescribed a filtercomprisingasei'ies of superimposed filtering' elements, capillary inletand outlet liquid-ways, and means for supporting` the filter elements.In that same application I describe, but do not claim, a novel means forsecuring' the filter elements tightly in position after assembling same..l also describe, but do not claim, a novel modification of' thefiltering' elements which i'orm the su bject-matter ofl thisspecification.

In the drawings, Figure l is a vertical central section of' my improvedfilter. Fig'. 2 is an enlarged section through some of' the filterelements.

In the drawings each filter element is shown as` composed of' two layersM of' filter mass, one arranged on each side ofl the horizontallyplacedwoven-wire screen provided with intermediate protecting-sheets l) I) offlannel or other suitable material. On each side of' each filter elementis arranged a horizontallyplaced coarse woven wire screen E. The screensO and E and the layers ofl pulp are supported from central hubs B,provided with projecting' flanges which embrace and carry the screens.Each hub is provided with a central vertical opening B and with radialpassages fi 6, communicating with it and screen O.

lt is an inclosing' external drum, between which and the filter elementsis a vertical annular inlet-passage lV, communicating with screens E E,and hub B, that embraces and supports screens O O, and provided withpas- Sages 6 6, connected, by means of' central openl filter element, asformed above, isplaced above 100 ing' BQ with the outlet-passage O onthe base plate or platform H, made of' cast-iron or some other suitablematerial.

l is an inlet-passage communicating with the annular space I Secured tothe base H and projecting upward are two posts Il and L. At their upperextremities they are secured by nuts or other suitable means to atransverse volte N, provided with a central threaded aperture to cng'agewith a vertical screw provided at its upper end with a hand-wheel l( orsome other means Afor securing' its rotation. At the lower end of thescrew is secured a coverplate G, adapted to rotate horizontally b vmeans ofl a packing-ring or ball-bea-ring'", embraced by grooves in thecover and shank ofthe screw. The cover fits water-tight by means of'gaskets on the top ot' the drum R and also on the top of' the uppermostboss B to the top filtering elements.

The method of.l assembling' the form of filter as described is asfollows: The filter' layers are formed outside of' the filter in asuitable mold. The lower layer is first made, then the screen (I, hub Bare placed in position, and the upper layer is Aformed on top of' thescreen O. The forming' of the pulp mass M maybe done by means known inthe art, which consist in dissolving the filter mass to a thin soup,using' a cylindrical external mold of' the largest diameter ofl thefiltering layer and an internal central'mold of' the smallest diameterofl the filtei'ing' layer, and expressing the water out of' this thinmass by means of a top press-plate fitting' between the ring-shapedspace between the two cylindrical molds. The diameter of' the screen Obeing' less than the filtering' layers and the pulp of' the upper filterlayer being' wet when poured on the lower filter layer and dissolving'the latter somewhat when poured in, the two layers on each side of' thescreen() will be interlaced in an annular area of' contact, as shown inthe drawings. After the two filtering' layers are interlaced they arecovered with a dividing-screen E, and this constitutes one filtering'element. To place the screens together, one of the screens IC is firstplaced on the base-plate H. Then the it. Then another filter elementformed in the same manner is placed above that until they are all placedin position. This position is indicated by Fig. 1. It remains now toclose the filter, which is done by swinging the transverse yoke N inposition and forcing the screw downward by means of the hand-wheel K.'Ihe height of the hubs together must be exactly the height of theexternal drum R, as shown in Fig. 1, whereupon the cover G will closethe hubs and drum simultaneously.

What I claim as my invention, and desire to secure by Letters Patent,is4

l. The combination with a series of superimposed filter elements restingupon a base, of ali-external drum, a cover adapted to fit snugly overthe drum, swing-support for cover attached to the filter, and the samemeans for simultaneously forcing the cover downward and upon the drumand filter elements.

2. The combination with a series of superimposed filter elements havingcentral intercommunicating openings,of a base, an external drum, and acover in contact with the uppermost filter elements and sealing thedrum.

3. The combination with a series of superimposed filter elements restingupon a base, provided with an inlet and outlet passage registering' withsimilar passages in each filter element, of an external drum, of aframework supported from the base, a yoke carried thereby, a coveradapted to fit snugly on top of the uppermost filter elements and drumand secured to the yoke, and means for forcing the cover downward.

11. The combination with a series of superimposed filter elementsresting upon a base, provided with inlet and outlet passages registeringwith similar passages in each filter element, of an external drum, of aframework supported from the base, a yoke carried thereby, a coveradapted to fit snugly on top of the uppermost filter element and drumand secured to the yoke, and means for forcing the cover downwardconsisting of a screw adapted to rotate in a threaded aperture in saidyoke,

.and means for producing such rotation.

5. In a filter, the combination with a drum or casing,of circular filterlayers of compressed pulp, pairs of which are interlaced with each otherin an annular area at their periphery, said filter layers of a diametersomewhat smaller than the casing, whereby clear space is produced notobstructed by any other part of the filter, for circulation of theliquid between the inside of the casing and the peripheral fibers of thefilter mass.

6. The combination of a drum or casing with inlet and outlet openings,of circular filter layers of compressed pulp of a diameter somewhatsmaller than the casing, pairs of said filter layers being connected attheir periphery so as to prevent the passage of unfiltered liquidthrough the place of connection, embedding between themselves aliquid-conductor,

centrally and rigidly supported by means affording a communicatingpassage between all of said liquid-conductors and the outlet-opening inthe casing.

7. In a filter, the combination with a casing or drum containing aseries of superimposed filter elements having central intercommunieatingopenings, of the same means for sealing the drum and bearing upon thefilter elements.

8. The combination with a series of superimposed filter elements havingcentral intercommunicating openings, of an external drum and cover incontact with the uppermost filter elements and sealing the drum.v

9. The combination with a series of superimposed filter elements havingcentral intercommunicating openings, of an external drum, a screwarrangement for simultaneously forcing the cover downward upon the drum,and bearing upon the filter elements.

10. The combination with a series of superi imposed filter elementsresting upon a base, of an external drum, of upright posts secured tosaid base, a transverse yoke supported by said posts, a cover for thefilter suspended from the yoke, and means for forcing the coverdownward.

11. The combination with a series of superimposed filter elements,resting upon a base, of an external drum, and a cover adapted to fitsnugly over the drum, means for supporting the cover consisting of ascrew, a yoke with which the screw engages and which is supported fromthe framework of the apparatus, and means centrally arranged to forcethe screw downward.

12. The combination with a series of superimposed filter elementsresting upon a base, of an external drum, and a cover adapted to fitsnugly over the drum, means for supporting the cover when notin use andmeans for forcing the same downward upon the drum and filter elements,consisting of a screw operated by a hand-wheel.

13. The combination with a series of superimposed filter elementsresting upon a base, of

a drum surrounding said filter elements, of upright posts secured tosaid base, a transverse yoke supported by said posts, a cover for thefilter suspended from the yoke, and means for forcing the coverdownward.

14. The combination with a series of superimposed filter elementsresting upon a base, of a drum surrounding said filter elements, ofupright posts secured to said base, a transverse yoke supported by saidposts, a cover for the filter, and means for forcing the cover downwardupon drum and elements simultaneously.

15. The combination with a base-plate provided with suitable inlet andoutlet passages, a series ofv superimposed filter elements restingthereon, upright posts secured to said base-plate, a surrounding drum,and a cover IIO adapted to be swung away from filter elements.

16. The combination with a series of superimposed filter elementsresting upon a base, of an external drum, and a cover adapted to fitsnugly over the drum, means for supporting the cover consisting' of ascrew, a yoke with which the screw engages and which is supported fromthe framework of the apparatus, and means centrally arranged to forcethe screw downward consisting of a hand-wheel.

17. The combination with a series of superimposed filter elementsresting upon a base, of an external drum, of upright posts secured tosaid base, a transverse yoke supported by said posts, of a cover for thefilter suspended from the yoke and means for forcing' the cover downwardconsisting' of a screw adapted to rotate in a threaded aperture in saidyoke, and means for producing such rotation.

1S. The combination with a series of superimposed filter elementsresting upon a base, of an external drum, of upright posts secured tosaid base, a transverse yoke hinged to one of' said posts and providedwith means for fastening it to another of said posts, a cover for thefilter suspended from said yoke, and means for forcing' the coverdownward against the uppermost filter element and drinn.

19. The combination with a series of superimposed filter elements,resting upon a base provided with an inlet and outlet passageregistering with similar passages in each filterI element, of anexternal drum, of' a framework supported from the base, a yoke carriedthereby, a cover adapted to fit snugly on top of the uppermost filterelement and drum and secured to the yoke, and means for forcing' thecover downward.

20. The combination with a series of superimposed filter elementsresting upon a base, provided with inlet and outlet passagesregistering' with similar passages in each filter element, of anexternal drum, of a framework supported from the base, a yoke carriedthereby, a cover adapted to fit snugly on top of the uppermost filterelement and drum and secured to the yoke, and means for forcing' thecover downward consisting' of a screw adapted to rotate in a threadedaperture in I with passages within said hub, with an external drum, witha base upon which the filter elements rest, said base being providedwith inlet and outlet passages communicating with the similar passagesin the hubs, a framework supported from the base, a cover carriedthereby and adapted to fit snugly upon the uppermost filter element anddrum, and means centrally placed to force the cover thereon.

Q2. The combination with a series of superimposed filter elementsresting' upon a base, a drum surrounding' said filter elements, ofupright posts secured to said base, a transverse yoke hinged to one ofsaid posts, and provided with means for fastening it to another of saidposts, a cover for the filter suspended from said yoke and means for'forcing' the cover downward against the uppermost filter element anddrum.

Q3. The combination with a series of superimposed filter elementsresting upon a base, provided with an inlet and outlet passage reg'-istering with similar passages in each filter element, of a drumsurrounding said filter elements, and of' a framework supported from thebase, a yoke carried thereby, a cover adapted to fit snugly on top ofthe uppermost filter element and drum and secured to the yoke, and meansfor forcing the cover downward.

2f. The combination of a series of superimposed filter elements, eachconsisting of layers of filter mass and provided with an outlet fiuidwayconsisting' of woven-wire screens embedded with the filter layers andsupported from a central hub with the interior of' which it communicatesand inlet fiuid-ways consisting of woven-wire screens placed on eachside of the filter layers and extending to the edges thereof, of' anexternal drum, with a baseplate having" a main outlet communicating withthe interior of the hubs, a main inlet com m unicating with a spacebetween the outer surfaces of the filter layers and an external drumalso supported from the base-plate, with a framework supported from thebase, a cover carried thereby and adapted to fit snugly upon theuppermost filter element and the rim of the drum and means adapted toforce the cover thereon.

fitness my hand, this 1st day of May, 1903, at the city of Cincinnati,in the county of Haniilton and State of Ohio.

KARL KIEFER. iVitnesses:

H. L. RAunnAU, il'. lVlmpuN.

